Unable to add Items to RadCommandBar

Hello John,

The command bar designer in .NET Core does not support custom selection glyphs. That's why it's not possible to select the row elements and to invoke the drop-down with the buttons. Yet, it is possible to add items to the control and have a fully functional designer.

In order to achieve this, it's necessary to work with the collection editors. You can invoke them straight from the action list. For example, you can click Edit Rows, then select the row you want and find the Strips collection in the property grid. Then inside the Strips collection editor, you can work with the Items collection of the strip and add elements to it. I am attaching a short gif file demonstrating the above scenario as well as my test project.

I admit that working with collection editors nested in each other is not ideal and it is a long way to achieve something relatively simple, moreover that it was working in the old .NET Framework designer. The new .NET Core designer has a completely different architecture, compared to the old one, you can read more about it the following blog: Telerik UI for WinForms Designers for .NET Core and .NET 5.0. We've managed to achieve parity between the new and old designer in many areas, however, custom selection glyphs and inline editing are still missing. That's why I am logging on your behalf the following request on our feedback portal: RadControl: Make the new .NET designer more interactive. I have also updated your Telerik points. We understand that this feature is really important and it will improve the entire design-time experience, so it is definitely on our radar. Until then I hope that invoking the collection editors would be an option.

I hope this will help. Let me know if you have to other questions.

Regards,
Hristo
Progress Telerik